“…In the existing studies, the methods for generating project risk response strategies can be mainly classified into four types (Zhang & Fan, 2014): the zonal-based method (Elkjaer & Felding, 1999;Flanagan & Norman, 1993;Jordan, Jørgensen, & Mitterhofer, 2013;Marcelino-Sádaba, Pérez-Ezcurdia, Echeverría Lazcano, & Villanueva, 2014;Miller & Lessard, 2001;Piney, 2002;Sumit, 2001), the trade-off method (Chapman & Ward, 1996;Kujawski, 2002;Pipattanapiwong & Watanabe, 2000), the work breakdown structure (WBS)-based method (Chapman, 1979;Klein, Powell, & Chapman, 1994;Seyedhoseini, Noori, & Hatefi, 2009) and the optimization-model method (Ben-David & Raz, 2001;Fan et al, 2008;Hu, Zhang, Ngai, Cai, & Liu, 2013;Kayis, Arndt, Zhou, & Amornsawadwatana, 2007). The detailed elaborations of the above four types of methods can been seen from Zhang and Fan (2014).…”